Optical image capturing system

ABSTRACT

A five-piece optical lens for capturing image and a five-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens with positive refractive power having an object-side surface which can be convex; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; and a fifth lens which can have negative refractive power, wherein an image-side surface thereof can be concave, and at least one surface of the fifth lens has an inflection point; both surfaces of each of the five lenses are aspheric. The optical lens can increase aperture value and improve the imaging quality for use in compact cameras.

The current application claims a foreign priority to application number104103578 filed on Feb. 3, 2015 in Taiwan.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates generally to an optical system, and moreparticularly to a compact optical image capturing system for anelectronic device.

2. Description of Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemis raised gradually. The image sensing device of ordinary photographingcamera is commonly selected from charge coupled device (CCD) orcomplementary metal-oxide semiconductor sensor (CMOS Sensor). Inaddition, as advanced semiconductor manufacturing technology enables theminimization of pixel size of the image sensing device, the developmentof the optical image capturing system towards the field of high pixels.Therefore, the requirement for high imaging quality is rapidly raised.

The conventional optical system of the portable electronic deviceusually has a three or four-piece lens. However, the optical system isasked to take pictures in a dark environment, in other words, theoptical system is asked to have a large aperture. An optical system withlarge aperture usually has several problems, such as large aberration,poor image quality at periphery of the image, and hard to manufacture.In addition, an optical system of wide-angle usually has largedistortion. Therefore, the conventional optical system provides highoptical performance as required.

It is an important issue to increase the quantity of light entering thelens and the angle of field of the lens. In addition, the modern lens isalso asked to have several characters, including high pixels, high imagequality, small in size, and high optical performance.

BRIEF SUMMARY OF THE INVENTION

The aspect of embodiment of the present disclosure directs to an opticalimage capturing system and an optical image capturing lens which usecombination of refractive powers, convex and concave surfaces offive-piece optical lenses (the convex or concave surface in thedisclosure denotes the geometrical shape of an image-side surface or anobject-side surface of each lens on an optical axis) to increase thequantity of incoming light of the optical image capturing system, and toimprove imaging quality for image formation, so as to be applied tominimized electronic products.

The term and its definition to the lens parameter in the embodiment ofthe present are shown as below for further reference.

The lens parameter related to a length or a height in the lens element:

A height for image formation of the optical image capturing system isdenoted by HOI. A distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane is denoted byHOS. A distance from the object-side surface of the first lens elementto the image-side surface of the fifth lens element is denoted by InTL.A distance from the image-side surface of the fifth lens to the imageplane is denoted by InB. InTL+InB=HOS. A distance from the first lenselement to the second lens element is denoted by IN12 (instance). Acentral thickness of the first lens element of the optical imagecapturing system on the optical axis is denoted by TP1 (instance).

The lens parameter related to a material in the lens:

An Abbe number of the first lens element in the optical image capturingsystem is denoted by NA1 (instance). A refractive index of the firstlens element is denoted by Nd1 (instance).

The lens parameter related to a view angle in the lens:

A view angle is denoted by AF. Half of the view angle is denoted by HAF.A major light angle is denoted by MRA.

The lens parameter related to exit/entrance pupil in the lens

An entrance pupil diameter of the optical image capturing system isdenoted by HEP.

The lens parameter related to a depth of the lens shape

A distance in parallel with an optical axis from a maximum effectivesemi diameter position to an axial point on the object-side surface ofthe fifth lens is denoted by InRS51 (instance). A distance in parallelwith an optical axis from a maximum effective semi diameter position toan axial point on the image-side surface of the fifth lens is denoted byInRS52 (instance).

The lens parameter related to the lens shape:

A critical point C is a tangent point on a surface of a specific lens,and the tangent point is tangent to a plane perpendicular to the opticalaxis and the tangent point cannot be a crossover point on the opticalaxis. To follow the past, a distance perpendicular to the optical axisbetween a critical point C41 on the object-side surface of the fourthlens and the optical axis is HVT41 (instance). A distance perpendicularto the optical axis between a critical point C42 on the image-sidesurface of the fourth lens and the optical axis is HVT42 (instance). Adistance perpendicular to the optical axis between a critical point C51on the object-side surface of the fifth lens and the optical axis isHVT51 (instance). A distance perpendicular to the optical axis between acritical point C52 on the image-side surface of the fifth lens and theoptical axis is HVT52 (instance). The object-side surface of the fifthlens has one inflection point IF511 which is nearest to the opticalaxis, and the sinkage value of the inflection point IF511 is denoted bySGI511. A distance perpendicular to the optical axis between theinflection point IF511 and the optical axis is HIF511 (instance). Theimage-side surface of the fifth lens has one inflection point IF521which is nearest to the optical axis, and the sinkage value of theinflection point IF521 is denoted by SGI521 (instance). A distanceperpendicular to the optical axis between the inflection point IF521 andthe optical axis is HIF521 (instance). The object-side surface of thefifth lens has one inflection point IF512 which is the second nearest tothe optical axis, and the sinkage value of the inflection point IF512 isdenoted by SGI512 (instance). A distance perpendicular to the opticalaxis between the inflection point IF512 and the optical axis is HIF512(instance). The image-side surface of the fifth lens has one inflectionpoint IF522 which is the second nearest to the optical axis, and thesinkage value of the inflection point IF522 is denoted by SGI522(instance). A distance perpendicular to the optical axis between theinflection point IF522 and the optical axis is HIF522 (instance).

The lens element parameter related to an aberration:

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the range ofthe aberration offset for the view of image formation may be limited to50%-100% field. An offset of the spherical aberration is denoted by DFS.An offset of the coma aberration is denoted by DFC.

The present invention provides an optical image capturing system, inwhich the fifth lens is provided with an inflection point at theobject-side surface or at the image-side surface to adjust the incidentangle of each view field and modify the ODT and the TDT. In addition,the surfaces of the fifth lens are capable of modifying the optical pathto improve the imagining quality.

The optical image capturing system of the present invention includes afirst lens, a second lens, a third lens, a fourth lens, and a fifth lensin order along an optical axis from an object side to an image side.These five lenses have refractive power. Both the object-side surfaceand the image-side surface of the fifth lens are aspheric surfaces. Theoptical image capturing system satisfies:1.2≤f/HEP≤6.0 and 0.5≤HOS/f≤5.0;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; andHOS is a distance in parallel with the optical axis between anobject-side surface, which face the object side, of the first lens andthe image plane.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, a third lens, a fourthlens, and a fifth lens in order along an optical axis from an objectside to an image side. The first lens has refractive power, the secondlens has refractive power, and the third and the fourth lenses haverefractive power. The fifth lens has negative refractive power, and bothan object-side surface and an image-side surface thereof are asphericsurfaces. The optical image capturing system satisfies:1.2≤f/HEP≤6.0; 0.5≤HOS/f≤3.0; 0.4≤|tan(HAF)|≤5.0; |TDT|<60%; and|ODT|≤50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; and ODT is an optical distortion.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, a third lens, a fourthlens, and a fifth lens in order along an optical axis from an objectside to an image side. At least two of these five lenses have at leastan inflection point on a side thereof respectively. The first lens haspositive refractive power, and both an object-side surface and animage-side surface thereof are aspheric surfaces. The second and thethird lens have refractive power, and the fourth lens has positiverefractive power. The fifth lens has negative refractive power, whereinan image-side surface thereof has at least an inflection point, and bothan object-side surface and the image side surface thereof are asphericsurfaces. The optical image capturing system satisfies:1.2≤f/HEP≤3.0; 0.5≤HOS/f≤3.0; 0.4≤|tan(HAF)|≤3.0; |TDT|<60%; and|ODT|≤50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; and ODT is an optical distortion.

In an embodiment, the optical image capturing system further includes animage sensor with a size less than 1/1.2″ in diagonal, and a pixel lessthan 1.4 μm. A preferable size is 1/2.3″, and a preferable pixel size ofthe image sensor is less than 1.12 μm, and more preferable pixel size isless than 0.9 μm. A 16:9 image sensor is available for the optical imagecapturing system of the present invention.

In an embodiment, the optical image capturing system of the presentinvention is available to high-quality (4K2K, so called UHD and QHD)recording, and provides high quality of image.

In an embodiment, a distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane (HOS) can bereduced while |f|I>f5.

In an embodiment, when the lenses satisfy |f2|+|f3|+|f4|>|f1|+|f5|, atleast one of the lenses from the second lens to the fourth lens couldhave weak positive refractive power or weak negative refractive power.The weak refractive power indicates that an absolute value of the focallength is greater than 10. When at least one of the lenses from thesecond lens to the fourth lens could have weak positive refractivepower, it may share the positive refractive power of the first lens, andon the contrary, when at least one of the lenses from the second lens tothe fourth lens could have weak negative refractive power, it may finelycorrect the aberration of the system.

In an embodiment, the fifth lens has negative refractive power, and animage-side surface thereof can be concave, it may reduce back focallength and size. Besides, the fifth lens has at least an inflectionpoint on at least a surface thereof, which may reduce an incident angleof the light of an off-axis field of view and correct the aberration ofthe off-axis field of view.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The present invention will be best understood by referring to thefollowing detailed description of some illustrative embodiments inconjunction with the accompanying drawings, in which

FIG. 1A is a schematic diagram of a first preferred embodiment of thepresent invention;

FIG. 1B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the first embodiment of thepresent application;

FIG. 1C shows a curve diagram of TV distortion of the optical imagecapturing system of the first embodiment of the present application;

FIG. 2A is a schematic diagram of a second preferred embodiment of thepresent invention;

FIG. 2B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the second embodiment of thepresent application;

FIG. 2C shows a curve diagram of TV distortion of the optical imagecapturing system of the second embodiment of the present application;

FIG. 3A is a schematic diagram of a third preferred embodiment of thepresent invention;

FIG. 3B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the third embodiment of thepresent application;

FIG. 3C shows a curve diagram of TV distortion of the optical imagecapturing system of the third embodiment of the present application;

FIG. 4A is a schematic diagram of a fourth preferred embodiment of thepresent invention;

FIG. 4B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fourth embodiment of thepresent application;

FIG. 4C shows a curve diagram of TV distortion of the optical imagecapturing system of the fourth embodiment of the present application;

FIG. 5A is a schematic diagram of a fifth preferred embodiment of thepresent invention;

FIG. 5B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fifth embodiment of thepresent application;

FIG. 5C shows a curve diagram of TV distortion of the optical imagecapturing system of the fifth embodiment of the present application;

FIG. 6A is a schematic diagram of a sixth preferred embodiment of thepresent invention;

FIG. 6B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the sixth embodiment of thepresent application; and

FIG. 6C shows a curve diagram of TV distortion of the optical imagecapturing system of the sixth embodiment of the present application.

DETAILED DESCRIPTION OF THE INVENTION

An optical image capturing system of the present invention includes afirst lens, a second lens, a third lens, a fourth lens, and a fifth lensfrom an object side to an image side. The optical image capturing systemfurther is provided with an image sensor at an image plane.

The optical image capturing system works in three wavelengths, including486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 mm is the main referencewavelength, and 555 nm is adopted as the main reference wavelength forextracting features.

The optical image capturing system of the present invention satisfies0.5≤ΣPPR/|ΣNPR|≤2.5, and a preferable range is 1≤ΣPPR/|ΣNPR|≤2.0, wherePPR is a ratio of the focal length f of the optical image capturingsystem to a focal length fp of each of lenses with positive refractivepower; NPR is a ratio of the focal length f of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power; ΣPPR is a sum of the PPRs of each positive lens, andΣNPR is a sum of the NPRs of each negative lens. It is helpful tocontrol of an entire refractive power and an entire length of theoptical image capturing system.

HOS is a distance in parallel with the optical axis from an object-sidesurface of the first lens to the image plane, and when the ratio ofHOS/f approaches to 1, it is helpful for decrease of size and increaseof imaging quality.

In an embodiment, the optical image capturing system of the presentinvention satisfies 0<ΣPP≤200 and f1/ΣPP≤0.85, where ΣPP is a sum of afocal length fp of each lens with positive refractive power, and ΣNP isa sum of a focal length fn of each lens with negative refractive power.It is helpful to control of focusing capacity of the system andredistribution of the positive refractive powers of the system to avoidthe significant aberration in early time. The optical image capturingsystem further satisfies Σ NP<−0.1 and f5/ΣNP≤0.85, which is helpful tocontrol of an entire refractive power and an entire length of theoptical image capturing system.

The first lens has positive refractive power, and an object-sidesurface, which faces the object side, thereof can be convex. It maymodify the positive refractive power of the first lens as well asshorten the entire length of the system.

The second lens can have negative refractive power, which may correctthe aberration of the first lens.

The third lens can have positive refractive power, which may share thepositive refractive power of the first lens to avoid the increase of theaberration and reduce the sensitivity of the system.

The fourth lens can have positive refractive power, and an image-sidesurface thereof, which faces the image side, can be convex. The fourthlens may share the positive refractive power of the first lens to reducean increase of the aberration and reduce a sensitivity of the system.

The fifth lens has negative refractive power, and an image-side surfacethereof, which faces the image side, can be concave. It may shorten arear focal length to reduce the size of the system. In addition, thefifth lens is provided with at least an inflection point on at least asurface to reduce an incident angle of the light of an off-axis field ofview and correct the aberration of the off-axis field of view. It ispreferable that each surface, the object-side surface and the image-sidesurface, of the fifth lens has at least an inflection point.

The image sensor is provided on the image plane. The optical imagecapturing system of the present invention satisfies HOS/HOI:S3 and0.5:SHOS/f:S5.0, and a preferable range is 1:SHOS/HOI:S2.5 and1:SHOS/f:S2, where HOI is height for image formation of the opticalimage capturing system, i.e., the maximum image height, and HOS is adistance in parallel with the optical axis from an object-side surfaceof the first lens to the image plane, i.e., a distance on the opticalaxis between the object-side surface of the first lens and the imageplane. It is helpful for reduction of size of the system for used incompact cameras.

The optical image capturing system of the present invention further isprovided with an aperture to increase image quality.

In the optical image capturing system of the present invention, theaperture could be a front aperture or a middle aperture, wherein thefront aperture is provided between the object and the first lens, andthe middle is provided between the first lens and the image plane. Thefront aperture provides a long distance between an exit pupil of thesystem and the image plane, which allows more elements to be installed.The middle could enlarge a view angle of view of the system and increasethe efficiency of the image sensor. The optical image capturing systemsatisfies 0.5≤InS/HOS≤1.1, and a preferable range is 0.8≤InS/HOS≤1,where InS is a distance between the aperture and the image plane. It ishelpful for size reduction and wide angle.

The optical image capturing system of the present invention satisfies0.45≤ΣTP/InTL≤0.95, where InTL is a distance between the object-sidesurface of the first lens and the image-side surface of the fifth lens,and ΣTP is a sum of central thicknesses of the lenses on the opticalaxis. It is helpful for the contrast of image and yield of manufacture,and provides a suitable back focal length for installation of otherelements.

The optical image capturing system of the present invention satisfies0.1≤|R1/R2|≤5, and a preferable range is 0.1≤|R1/R2|≤4, where R1 is aradius of curvature of the object-side surface of the first lens, and R2is a radius of curvature of the image-side surface of the first lens. Itprovides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the present invention satisfies−200<(R9−R10)/(R9+R10)<30, where R9 is a radius of curvature of theobject-side surface of the fifth lens, and R10 is a radius of curvatureof the image-side surface of the fifth lens. It may modify theastigmatic field curvature.

The optical image capturing system of the present invention satisfies0<IN12/f≤2.0, and a preferable range is 0.01≤IN12/f≤0.25, where IN12 isa distance on the optical axis between the first lens and the secondlens. It may correct chromatic aberration and improve the performance.

The optical image capturing system of the present invention satisfies0<(TP1+IN12)/TP2≤10, where TP1 is a central thickness of the first lenson the optical axis, and TP2 is a central thickness of the second lenson the optical axis. It may control the sensitivity of manufacture ofthe system and improve the performance.

The optical image capturing system of the present invention satisfies0<(TP5+IN45)/TP4≤10, where TP4 is a central thickness of the fourth lenson the optical axis, TP5 is a central thickness of the fifth lens on theoptical axis, and IN45 is a distance between the fourth lens and thefifth lens. It may control the sensitivity of manufacture of the systemand improve the performance.

The optical image capturing system of the present invention satisfies0.1≤(TP2+TP3+TP4)/ΣTP≤0.9, and a preferable range is0.4≤(TP2+TP3+TP4)/ΣTP≤0.8, where TP2 is a central thickness of thesecond lens on the optical axis, TP3 is a central thickness of the thirdlens on the optical axis, TP4 is a central thickness of the fourth lenson the optical axis, TP5 is a central thickness of the fifth lens on theoptical axis, and ΣTP is a sum of the central thicknesses of all thelenses on the optical axis. It may finely correct the aberration of theincident rays and reduce the height of the system.

The optical image capturing system of the present invention satisfies−1.5 mm≤InRS51≤1.5 mm; −1.5 mm≤InRS52≤1.5 mm; 0 mm<|InRS51|+|InRS52|≤3mm; 0.01≤|InRS51|/TP5≤10; and 0.01≤|InRS52|/TP5≤10, where InRS51 is adisplacement in parallel with the optical axis from a point on theobject-side surface of the fifth lens, through which the optical axispasses, to a point at the maximum effective semi diameter of theobject-side surface of the fifth lens, wherein InRS51 is positive whilethe displacement is toward the image side, and InRS51 is negative whilethe displacement is toward the object side; InRS52 is a displacement inparallel with the optical axis from a point on the image-side surface ofthe fifth lens, through which the optical axis passes, to a point at themaximum effective semi diameter of the image-side surface of the fifthlens; and TP5 is a central thickness of the fifth lens on the opticalaxis. It may control a ratio of the central thickness of the fifth lensand the effective semi diameter thickness (thickness ratio) to increasethe yield of manufacture.

The optical image capturing system of the present invention satisfies0<SGI511/(SGI511+TP5)≤0.9 and 0<SGI521/(SGI521+TP5)≤0.9, and apreferable range is 0.01<SGI511/(SGI511+TP5)≤0.7 and0.01<SGI521/(SGI521+TP5)≤0.7, where SGI511 is a displacement in parallelwith the optical axis from a point on the object-side surface of thefifth lens, through which the optical axis passes, to an inflectionpoint, which is the closest to the optical axis, on the object-sidesurface of the fifth lens; SGI521 is a displacement in parallel with theoptical axis from a point on the image-side surface of the fifth lens,through which the optical axis passes, to an inflection point, which isthe closest to the optical axis, on the image-side surface of the fifthlens, and TP5 is a thickness of the fifth lens on the optical axis.

The optical image capturing system of the present invention satisfies0<SGI512/(SGI512+TP5)≤0.9 and 0<SGI522/(SGI522+TP5)≤0.9, and apreferable range is 0.1<SGI512/(SGI512+TP5)≤0.8 and0.1≤SGI522/(SGI522+TP5)≤0.8, where SGI512 is a displacement in parallelwith the optical axis from a point on the object-side surface of thefifth lens, through which the optical axis passes, to an inflectionpoint, which is the second closest to the optical axis, on theimage-side surface of the fifth lens, and SGI522 is a displacement inparallel with the optical axis from a point on the object-side surfaceof the fifth lens, through which the optical axis passes, to aninflection point, which is the second closest to the optical axis, onthe image-side surface of the fifth lens.

The optical image capturing system of the present invention satisfies0.01≤′HIF511/HOI≤0.9 and 0.01≤HIF521/HOI≤0.9, and a preferable range is0.09≤HIF511/HOI≤0.5 and 0.09≤HIF521/HOI≤0.5, where HIF511 is a distanceperpendicular to the optical axis between the inflection point, which isthe closest to the optical axis, on the object-side surface of the fifthlens and the optical axis, and HIF521 is a distance perpendicular to theoptical axis between the inflection point, which is the closest to theoptical axis, on the image-side surface of the fifth lens and theoptical axis.

The optical image capturing system of the present invention satisfies0.01≤HIF512/HOI≤0.9 and 0.01≤HIF522/HOI≤0.9, and a preferable range is0.09≤HIF512/HOI≤0.8 and 0.09≤HIF522/HOI≤0.8, where HIF512 is a distanceperpendicular to the optical axis between the inflection point, which isthe second the closest to the optical axis, on the object-side surfaceof the fifth lens and the optical axis, and HIF522 is a distanceperpendicular to the optical axis between the inflection point, which isthe second the closest to the optical axis, on the image-side surface ofthe fifth lens and the optical axis.

In an embodiment, the lenses of high Abbe number and the lenses of lowAbbe number are arranged in an interlaced arrangement that could behelpful for correction of aberration of the system.

An equation of aspheric surface isz=ch ²/[1+[1(k+1)c ² h ²]^(0.5) ]+A4h ⁴ +A6h ⁶ +A8h ⁸ +A10h ¹⁰ +A12h ¹²+A14h ¹⁴ +A16h ¹⁶ +A18h ¹⁸ +A20h ²⁰  (1)

where z is a depression of the aspheric surface; k is conic constant; cis reciprocal of radius of curvature; and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are high-order aspheric coefficients.

In the optical image capturing system, the lenses could be made ofplastic or glass. The plastic lenses may reduce the weight and lower thecost of the system, and the glass lenses may control the thermal effectand enlarge the space for arrangement of refractive power of the system.In addition, the opposite surfaces (object-side surface and image-sidesurface) of the first to the fifth lenses could be aspheric that canobtain more control parameters to reduce aberration. The number ofaspheric glass lenses could be less than the conventional sphericalglass lenses that is helpful for reduction of the height of the system.

When the lens has a convex surface, which means that the surface isconvex around a position, through which the optical axis passes, andwhen the lens has a concave surface, which means that the surface isconcave around a position, through which the optical axis passes.

The optical image capturing system of the present invention further isprovided with a diaphragm to increase image quality.

In the optical image capturing system, the diaphragm could be a frontdiaphragm or a middle diaphragm, wherein the front diaphragm is providedbetween the object and the first lens, and the middle is providedbetween the first lens and the image plane. The front diaphragm providesa long distance between an exit pupil of the system and the image plane,which allows more elements to be installed. The middle diaphragm couldenlarge a view angle of view of the system and increase the efficiencyof the image sensor. The middle diaphragm is helpful for size reductionand wide angle.

The optical image capturing system of the present invention could beapplied in dynamic focusing optical system. It is superior in correctionof aberration and high imaging quality so that it could be allied inlots of fields.

We provide several embodiments in conjunction with the accompanyingdrawings for the best understanding, which are:

First Embodiment

As shown in FIG. 1A and FIG. 1B, an optical image capturing system 100of the first preferred embodiment of the present invention includes,along an optical axis from an object side to an image side, an aperture100, a first lens 110, a second lens 120, a third lens 130, a fourthlens 140, a fifth lens 150, an infrared rays filter 170, an image plane180, and an image sensor 190.

The first lens 110 has positive refractive power, and is made ofplastic. An object-side surface 112 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 114thereof, which faces the image side, is a concave aspheric surface, andthe image-side surface has an inflection point. The first lens 110satisfies SGI121=0.0387148 mm and |SGI121|/(|SGI121|+TP1)=0.061775374,where SGI121 is a displacement in parallel with the optical axis from apoint on the image-side surface of the first lens, through which theoptical axis passes, to the inflection point on the image-side surface,which is the closest to the optical axis.

The first lens 110 further satisfies HIF121=0.61351 mm andHIF121/HOI=0.209139253, where HIF121 is a displacement perpendicular tothe optical axis from a point on the image-side surface of the firstlens, through which the optical axis passes, to the inflection point,which is the closest to the optical axis.

The second lens 120 has negative refractive power, and is made ofplastic. An object-side surface 122 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 124thereof, which faces the image side, is a convex aspheric surface, andthe image-side surface 124 has an inflection point. The second lens 120satisfies SGI221=−0.0657553 mm and |SGI221|/(|SGI221|+TP2)=0.176581512,where SGI221 is a displacement in parallel with the optical axis from apoint on the image-side surface of the second lens, through which theoptical axis passes, to the inflection point on the image-side surface,which is the closest to the optical axis.

The second lens further satisfies HIF221=0.84667 mm andHIF221/HOI=0.288621101, where HIF221 is a displacement perpendicular tothe optical axis from a point on the image-side surface of the secondlens, through which the optical axis passes, to the inflection point,which is the closest to the optical axis.

The third lens 130 has negative refractive power, and is made ofplastic. An object-side surface 132, which faces the object side, is aconcave aspheric surface, and an image-side surface 134, which faces theimage side, is a convex aspheric surface, and each of them has twoinflection points. The third lens 130 satisfies SGI311=−0.341027 mm;SGI321=−0.231534 mm and |SGI311|/(|SGI311|+TP3)=0.525237108 and|SGI321|/(|SGI321|+TP3)=0.428934269, where SGI311 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the third lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the closest to theoptical axis, and SGI321 is a displacement in parallel with the opticalaxis, from a point on the image-side surface of the third lens, throughwhich the optical axis passes, to the inflection point on the image-sidesurface, which is the closest to the optical axis.

The third lens 130 satisfies SGI312=−0.376807 mm; SGI322=−0.382162 mm;|SGI312|/(|SGI312|+TP5)=0.550033428; |SGI322|/(|SGI322|+TP3)=0.55352345,where SGI312 is a displacement in parallel with the optical axis, from apoint on the object-side surface of the third lens, through which theoptical axis passes, to the inflection point on the object-side surface,which is the second closest to the optical axis, and SGI322 is adisplacement in parallel with the optical axis, from a point on theimage-side surface of the third lens, through which the optical axispasses, to the inflection point on the image-side surface, which is thesecond closest to the optical axis.

The third lens 130 further satisfies HIF311=0.987648 mm; HIF321=0.805604mm; HIF311/HOI=0.336679052; and HIF321/HOI=0.274622124, where HIF311 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the third lens, which is the closestto the optical axis, and the optical axis, and HIF321 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the third lens, which is the closest to theoptical axis, and the optical axis.

The third lens 130 further satisfies HIF312=1.0493 mm; HIF322=1.17741mm; HIF312/HOI=0.357695585; and HIF322/HOI=0.401366968, where HIF312 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the third lens, which is the secondthe closest to the optical axis, and the optical axis, and HIF322 is adistance perpendicular to the optical axis, between the inflection pointon the image-side surface of the third lens, which is the second theclosest to the optical axis, and the optical axis.

The fourth lens 140 has positive refractive power, and is made ofplastic. Both an object-side surface 142, which faces the object side,and an image-side surface 144, which faces the image side, thereof areconvex aspheric surfaces, and the object-side surface 142 has aninflection point. The fourth lens 140 satisfies SGI411=0.0687683 mm and|SGI411|/(|SGI411|+TP4)=0.118221297, where SGI411 is a displacement inparallel with the optical axis from a point on the object-side surfaceof the fourth lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the closest to theoptical axis.

The fourth lens 140 further satisfies HIF411=0.645213 mm andHIF411/HOI=0.21994648, where HIF411 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fourth lens, which is the closest to the optical axis, and theoptical axis.

The fifth lens 150 has negative refractive power, and is made ofplastic. Both an object-side surface 152, which faces the object side,and an image-side surface 154, which faces the image side, thereof areconcave aspheric surfaces. The object-side surface 152 has threeinflection points, and the image-side surface 154 has an inflectionpoint. The fifth lens 150 satisfies SGI511=−0.236079 mm; SGI521=0.023266mm; |SGI511|/(|SGI511|+TP5)=0.418297214; and|SGI521|/(|SGI521|+TP5)=0.066177809, where SGI511 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the fifth lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the closest to theoptical axis, and SGI521 is a displacement in parallel with the opticalaxis, from a point on the image-side surface of the fifth lens, throughwhich the optical axis passes, to the inflection point on the image-sidesurface, which is the closest to the optical axis.

The fifth lens 150 further satisfies SGI512=−0.325042 mm and|SGI512|/(|SGI512|+TP5)=0.497505143, where SGI512 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the fifth lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the second closestto the optical axis.

The fifth lens 150 further satisfies SGI513=−0.538131 mm; and|SGI513|/(|SGI513|+TP5)=0.621087839, where SGI513 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the fifth lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the third closestto the optical axis.

The fifth lens 150 further satisfies HIF511=1.21551 mm; HIF521=0.575738mm; HIF511/HOI=0.414354866; and HIF521/HOI=0.196263167, where HIF511 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fifth lens, which is the closestto the optical axis, and the optical axis, and HIF521 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the fifth lens, which is the closest to theoptical axis, and the optical axis.

The fifth lens 150 further satisfies HIF512=1.49061 mm andHIF512/HOI=0.508133629, where HIF512 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fifth lens, which is the second the closest to the optical axis, andthe optical axis.

The fifth lens 150 further satisfies HIF513=2.00664 mm andHIF513/HOI=0.684042952, where HIF513 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fifth lens, which is the third closest to the optical axis, and theoptical axis.

The infrared rays filter 170 is made of glass, and between the fifthlens 150 and the image plane 180. The infrared rays filter 170 gives nocontribution to the focal length of the system.

The optical image capturing system of the first preferred embodiment hasthe following parameters, which are f=3.73172 mm; f/HEP=2.05; andHAF=37.5 degrees and tan(HAF)=0.7673, where f is a focal length of thesystem; HAF is a half of the maximum field angle; and HEP is an entrancepupil diameter.

The parameters of the lenses of the first preferred embodiment aref1=3.7751 mm; |f/f1|=0.9885; f5=−3.6601 mm; |f1|>f5; and |f1/f5|=1.0314,where f1 is a focal length of the first lens 110; and f5 is a focallength of the fifth lens 150.

The first preferred embodiment further satisfies |f2|+|f3|+|f4|=77.3594mm; |f1|+|f5|=7.4352 mm; and |f2|+|f3|+|f4|>|f1|+|f5|, where f2 is afocal length of the second lens 120; f3 is a focal length of the thirdlens 130; and f4 is a focal length of the fourth lens 140.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPPR=f/f1+f/f4=1.9785; ΣNPR=f/f2+f/f3+f/f5=−1.2901;ΣPPR/|ΣNPR|=1.5336; |f/f1|=0.9885; |f/f2|=0.0676; |f/f3|=0.2029;|f/f4|=0.9900; and |f/f5|=1.0196, where PPR is a ratio of a focal lengthf of the optical image capturing system to a focal length fp of each ofthe lenses with positive refractive power; and NPR is a ratio of a focallength f of the optical image capturing system to a focal length fn ofeach of lenses with negative refractive power.

The optical image capturing system of the first preferred embodimentfurther satisfies InTL+InB=HOS; HOS=4.5 mm; HOI=2.9335 mm;HOS/HOI=1.5340; HOS/f=1.2059; InTL/HOS=0.7597; InS=4.19216 mm; andInS/HOS=0.9316, where InTL is a distance between the object-side surface112 of the first lens 110 and the image-side surface 154 of the fifthlens 150; HOS is a distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane, i.e., adistance between the object-side surface 112 of the first lens 110 andthe image plane 180; InS is a distance between the aperture 100 and theimage plane 180; HOI is height for image formation of the optical imagecapturing system, i.e., the maximum image height; and InB is a distancebetween the image-side surface 154 of the fifth lens 150 and the imageplane 180.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣTP=2.044092 mm and ΣTP/InTL=0.5979, where ΣTP is asum of the thicknesses of the lenses 110-150 with refractive power. Itis helpful for the contrast of image and yield of manufacture, andprovides a suitable back focal length for installation of otherelements.

The optical image capturing system of the first preferred embodimentfurther satisfies |R1/R2|=0.3261, where R1 is a radius of curvature ofthe object-side surface 112 of the first lens 110, and R2 is a radius ofcurvature of the image-side surface 114 of the first lens 110. Itprovides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the first preferred embodimentfurther satisfies (R9−R10)/(R9+R10)=−2.9828, where R9 is a radius ofcurvature of the object-side surface 152 of the fifth lens 150, and R10is a radius of curvature of the image-side surface 154 of the fifth lens150. It may modify the astigmatic field curvature.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPP=f1+f4=7.5444 mm and f1/(f1+f4)=0.5004, where ΣPPis a sum of the focal lengths fp of each lens with positive refractivepower. It is helpful to share the positive refractive power of the firstlens 110 to the other positive lens to avoid the significant aberrationcaused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣNP=f2+f3+f5=−77.2502 mm and f5/(f2+f3+f5)=0.0474,where f2, f3, and f5 are focal lengths of the second, the third, and thefifth lenses, and ΣNP is a sum of the focal lengths fn of each lens withnegative refractive power. It is helpful to share the negativerefractive power of the fifth lens 150 to other negative lenses to avoidthe significant aberration caused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies IN12=0.511659 mm and IN12/f=0.1371, where IN12 is adistance on the optical axis between the first lens 110 and the secondlens 120. It may correct chromatic aberration and improve theperformance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP1=0.587988 mm; TP2=0.306624 mm; and(TP1+IN12)/TP2=3.5863, where TP1 is a central thickness of the firstlens 110 on the optical axis, and TP2 is a central thickness of thesecond lens 120 on the optical axis. It may control the sensitivity ofmanufacture of the system and improve the performance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP4=0.5129 mm; TP5=0.3283 mm; and(TP5+IN45)/TP4=1.5095, where TP4 is a central thickness of the fourthlens 140 on the optical axis, TP5 is a central thickness of the fifthlens 150 on the optical axis, and IN45 is a distance on the optical axisbetween the fourth lens and the fifth lens. It may control thesensitivity of manufacture of the system and improve the performance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP3=0.3083 mm and (TP2+TP3+TP4)/ΣTP=0.5517, where TP2,TP3, and TP4 are thicknesses on the optical axis of the second, thethird, and the fourth lenses, and ΣTP is a sum of the centralthicknesses of all the lenses with refractive power on the optical axis.It may finely correct the aberration of the incident rays and reduce theheight of the system.

The optical image capturing system of the first preferred embodimentfurther satisfies InRS51=−0.576871 mm; InRS52=−0.555284 mm;|InRS51|+|InRS52|=1.1132155 mm; |InRS51|/TP5=1.7571; and|InRS52|/TP5=1.691, where InRS51 is a displacement in parallel with theoptical axis from a point on the object-side surface 152 of the fifthlens, through which the optical axis passes, to a point at the maximumeffective semi diameter of the object-side surface 152 of the fifthlens; InRS52 is a displacement in parallel with the optical axis from apoint on the image-side surface 154 of the fifth lens, through which theoptical axis passes, to a point at the maximum effective semi diameterof the image-side surface 154 of the fifth lens; and TP5 is a centralthickness of the fifth lens 150 on the optical axis. It is helpful formanufacturing and shaping of the lenses, and is helpful to reduce thesize.

The second lens 120 and the fifth lens 150 of the optical imagecapturing system of the first preferred embodiment have negativerefractive power, and the optical image capturing system furthersatisfies NA5/NA2=2.5441, where NA2 is an Abbe number of the second lens120, and NA5 is an Abbe number of the fifth lens 150. It may correct theaberration of the system.

The optical image capturing system of the first preferred embodimentfurther satisfies |TDT|=0.6343% and |ODT|=2.5001%, where TDT is TVdistortion; and ODT is optical distortion.

The parameters of the lenses of the first embodiment are listed in Table1 and Table 2.

TABLE 1 f = 3.73172 mm; f/HEP = 2.05; HAF = 37.5 deg; tan(HAF) = 0.7673Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane infinity 1 Aperture plane−0.30784 2 1^(st) lens 1.48285 0.587988 plastic 1.5441 56.1 3.77514 34.54742 0.511659 4 2^(nd) lens −9.33807 0.306624 plastic 1.6425 22.465−55.2008 5 −12.8028 0.366935 6 3^(rd) lens −1.02094 0.308255 plastic1.6425 22.465 −18.3893 7 −1.2492 0.05 8 4^(th) lens 2.18916 0.512923plastic 1.5441 56.1 3.7693 9 −31.3936 0.44596 10 5^(th) lens −2.863530.328302 plastic 1.514 57.1538 −3.6601 11 5.75188 0.3 12 Filter plane0.2 1.517 64.2 13 plane 0.58424 14 Image plane plane −0.00289 Referencewavelength: 555 nm

TABLE 2 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 k−1.83479 −20.595808 16.674705 11.425456 −4.642191 A4 6.89867E−022.25678E−02 −1.11828E−01 −4.19899E−02 −7.09315E−02 A6 2.35740E−02−6.17850E−02 −6.62880E−02 −1.88072E−02 9.65840E−02 A8 −4.26369E−025.82944E−02 −3.35190E−02 −6.98321E−02 −7.32044E−03 A10 5.63746E−03−2.73938E−02 −7.28886E−02 −1.13079E−02 −8.96740E−02 A12 7.46740E−02−2.45759E−01 4.05955E−02 6.79127E−02 −3.70146E−02 A14 −6.93116E−023.43401E−01 1.60451E−01 2.83769E−02 5.00641E−02 A16 −2.04867E−02−1.28084E−01 1.24448E−01 −2.45035E−02 7.50413E−02 A18 1.99910E−02−2.32031E−02 −1.94856E−01 2.90241E−02 −5.10392E−02 A20 Surface 7 8 9 1011 k −1.197201 −20.458388 −50 −2.907359 −50 A4 3.64395E−02 −1.75641E−02−7.82211E−04 −1.58711E−03 −2.46339E−02 A6 2.22356E−02 −2.87240E−03−2.47110E−04 −3.46504E−03 6.61804E−04 A8 7.09828E−03 −2.56360E−04−3.78130E−04 4.52459E−03 1.54143E−04 A10 5.05740E−03 7.39189E−05−1.22232E−04 1.05841E−04 −2.83264E−05 A12 −4.51124E−04 −5.53116E−08−1.50294E−05 −5.57252E−04 −5.78839E−06 A14 −1.84003E−03 8.16043E−06−5.41743E−07 4.41714E−05 −2.91861E−07 A16 −1.28118E−03 2.10395E−062.98820E−07 1.80752E−05 8.25778E−08 A18 4.09004E−04 −1.21664E−062.73321E−07 −2.27031E−06 −9.87595E−09 A20

The detail parameters of the first preferred embodiment are listed inTable 1, in which the unit of radius of curvature, thickness, and focallength are millimeter, and surface 0-14 indicates the surfaces of allelements in the system in sequence from the object side to the imageside. Table 2 is the list of coefficients of the aspheric surfaces, inwhich A1-A20 indicate the coefficients of aspheric surfaces from thefirst order to the twentieth order of each aspheric surface. Thefollowing embodiments have the similar diagrams and tables, which arethe same as those of the first embodiment, so we do not describe itagain.

Second Embodiment

As shown in FIG. 2A and FIG. 2B, an optical image capturing system ofthe second preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 200, afirst lens 210, a second lens 220, a third lens 230, a fourth lens 240,a fifth lens 250, an infrared rays filter 270, an image plane 280, andan image sensor 290.

The first lens 210 has positive refractive power, and is made ofplastic. An object-side surface 212 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 214thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 214 has an inflection point.

The second lens 220 has negative refractive power, and is made ofplastic. An object-side surface 222 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 224thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 222 has an inflection point, and the image-sidesurface 224 has two inflection points.

The third lens 230 has positive refractive power, and is made ofplastic. An object-side surface 232, which faces the object side, is aconcave aspheric surface, and an image-side surface 234, which faces theimage side, is a convex aspheric surface. The object-side surface 232and the image-side surface 234 each have an inflection point thereon.

The fourth lens 240 has positive refractive power, and is made ofplastic. An object-side surface 242 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 244thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 242 and the image-side surface 244 each has aninflection point thereon.

The fifth lens 250 has negative refractive power, and is made ofplastic. An object-side surface 252 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 254thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 254 has an inflection point.

The infrared rays filter 270 is made of glass, and between the fifthlens 250 and the image plane 280. The infrared rays filter 270 gives nocontribution to the focal length of the system.

The optical image capturing system of the second preferred embodimenthas the following parameters, which are |f2|+|f3|+|f4|=37.5373 mm;|f1|+|f5|=7.9194 mm; and |f2|+|f3|+|f4|>|f1|+|f5|, where f1 is a focallength of the first lens 210; f2 is a focal length of the second lens220; f3 is a focal length of the third lens 230; f4 is a focal length ofthe fourth lens 240; and f5 is a focal length of the fifth lens 250.

The optical image capturing system of the second preferred embodimentfurther satisfies TP4=0.7048 mm and TP5=0.3912 mm, where TP4 is athickness of the fourth lens on the optical axis, and TP5 is a thicknessof the fifth lens on the optical axis.

In the second embodiment, the first, the third, and the fourth lenses210, 230, and 240 are positive lenses, and their focal lengths are f1,f3, and f4 respectively. ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe first lens 210 to the other positive lens to avoid the significantaberration caused by the incident rays.

In the second embodiment, the second and the fifth lenses 220 and 250are negative lenses, and their focal lengths are f2 and f5 respectively.ΣNP is a sum of the focal lengths of each negative lens. It is helpfulto share the negative refractive power of the fifth lens 250 to othernegative lenses to avoid the significant aberration caused by theincident rays.

The parameters of the lenses of the second embodiment are listed inTable 3 and Table 4.

TABLE 3 f = 3.04474 mm; f/HEP = 1.4; HAF = 50.0002 deg; tan(HAF) =1.1918 Radius of curvature Thickness Refractive Abbe Focal lengthSurface (mm) (mm) Material index number (mm) 0 Object plane infinity 1Aperture infinity −0.31441 2 1^(st) lens 2.20673 0.411318 plastic 1.56558 6.28889 3 5.4028 0.510799 4 2^(nd) lens 9.51235 0.2 plastic 1.65 21.4−30.5763 5 6.39691 0.06878 6 3^(rd) lens −29.9399 1.133545 plastic 1.56558 4.63066 7 −2.44608 0.130206 8 4^(th) lens −5.73148 0.70476 plastic1.607 26.6 2.33036 9 −1.19388 0.449239 10 5^(th) lens −2.01485 0.391231plastic 1.65 21.4 −1.63051 11 2.45082 0.4 12 Filter infinity 0.2 1.51764.2 13 infinity 0.349594 14 Image plane infinity Reference wavelength:555 nm. The clear aperture of the fourth surface is 1.05 mm

TABLE 4 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k =0.286533 −8.244129 −35.082575 −50 50 0.767661 A4 = 3.84219E−03  3.02641E−02 −1.51099E−01 −5.74219E−02   1.23903E−02 4.98629E−03 A6 =5.55804E−02 −5.04066E−02 −2.11069E−02 −1.30714E−01 −3.55675E−02−3.41408E−02   A8 = −1.48618E−01     9.75086E−02 −5.13379E−02  1.97663E−01   3.82511E−02 2.60941E−02 A10 = 1.93241E−01 −1.15283E−01  1.14370E−01 −1.53379E−01 −1.74251E−02 −1.13517E−02   A12 =−1.07560E−01     8.13581E−02 −1.36206E−01   5.58656E−02   4.53820E−032.30791E−03 A14 = 1.91982E−02 −3.26764E−02   3.81604E−02 −6.15078E−03−5.11068E−04 3.89425E−05 Surface 8 9 10 11 k = 6.669586 −3.1463260.091085 −10.235913 A4 = −1.47899E−02   5.58711E−03 1.36758E−01  3.53284E−03 A6 =   1.26542E−02 −2.32654E−02 −7.53831E−02  −1.37235E−02 A8 = −9.49276E−03   2.02171E−02 5.80670E−03   4.96294E−03A10 =   5.07336E−03 −7.33256E−03 1.03780E−02 −8.55116E−04 A12 =−1.06311E−03   1.33148E−03 −3.97156E−03     7.06088E−05 A14 =  8.08345E−05 −9.28261E−05 4.46112E−04 −2.29052E−06

An equation of the aspheric surfaces of the second embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the second embodiment (with 555 nm as the mainreference wavelength) based on Table 3 and Table 4 are listed in thefollowing table:

InRS51 InRS52 HVT51 HVT52 |ODT|% |TDT|% −1.13201 −0.34899 0.000001.90704 2.25805 1.37178 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f1/f2|0.48415 0.09958 0.65752 1.30655 1.86735 0.20568 ΣPPR/ ΣPPR ΣNPR |ΣNPR|ΣPP ΣNP f1/ΣPP 2.44822 1.96693 1.24469 13.24991 −32.20681 0.47464|InRS51|/ |InRS52|/ HVT52/ HVT52/ f5/ΣNP IN12/f TP5 TP5 HOI HOS 0.050630.16776 2.8935 0.8920 0.50990 0.38530 InTL HOS HOS/HOI InS/HOS InTL/HOSΣTP/InTL 4.94947 3.99988 1.32339 0.93648 0.80814 0.71023 (TP1 + IN12)/(TP5 + IN45)/ TP2 TP4 (TP2 + TP3 + TP4)/ΣTP 4.61059 1.19256 0.71750

The exact parameters related to inflection points of the secondembodiment (with main reference wavelength as 555 nm) based on Table 3and Table 4 are listed in the following table:

HIF121 0.88751 HIF121/HOI 0.23730 SGI121 0.07965 |SGI121|/(|SGI121| +TP1) 0.16223 HIF211 0.23445 HIF211/HOI 0.06269 SGI211 0.00241|SGI211|/(|SGI211| + TP2) 0.00000 HIF221 0.35152 HIF221/HOI 0.09399SGI221 0.00824 |SGI221|/(|SGI221| + TP2) 0.28482 HIF222 1.18543HIF222/HOI 0.31696 SGI222 −0.09891 |SGI222|/(|SGI222| + TP2) 0.00000HIF311 0.84976 HIF311/HOI 0.22721 SGI311 −0.01155 |SGI311|/(|SGI311| +TP3) 0.01008 HIF321 1.41374 HIF321/HOI 0.37801 SGI321 −0.54447|SGI321|/(|SGI321| + TP3) 0.32448 HIF411 1.31111 HIF411/HOI 0.35056SGI411 −0.17910 |SGI411|/(|SGI411| + TP4) 0.20264 HIF421 1.21613HIF421/HOI 0.32517 SGI421 −0.44870 |SGI421|/(|SGI421| + TP4) 0.38900HIF521 0.90504 HIF521/HOI 0.24199 SGI521 0.13029 |SGI521|/(|SGI521| +TP5) 0.24982

Third Embodiment

As shown in FIG. 3A and FIG. 3B, an optical image capturing system ofthe third preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 300, afirst lens 310, a second lens 320, a third lens 330, a fourth lens 340,a fifth lens 350, an infrared rays filter 370, an image plane 380, andan image sensor 390.

The first lens 310 has positive refractive power, and is made ofplastic. An object-side surface 312 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 314thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 314 has an inflection point thereon.

The second lens 320 has negative refractive power, and is made ofplastic. An object-side surface 322 thereof, which faces the objectside, is a convex aspheric surface; while an image-side surface 324thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 322 and the image-side surface 324 both have aninflection point thereon.

The third lens 330 has positive refractive power, and is made ofplastic. An object-side surface 332, which faces the object side, is aconvex aspheric surface, and an image-side surface 334, which faces theimage side, is a convex aspheric surface. The object-side surface 332has two inflection points, and the image-side surface 334 has aninflection point.

The fourth lens 340 has a positive refractive power, and is made ofplastic. An object-side surface 342, which faces the object side, is aconvex aspheric surface, and an image-side surface 344, which faces theimage side, is a convex aspheric surface. The object-side surface 342has two inflection points, and the image-side surface 344 has aninflection point thereon.

The fifth lens 350 has negative refractive power, and is made ofplastic. An object-side surface 352, which faces the object side, is aconcave aspheric surface, and an image-side surface 354, which faces theimage side, is a concave aspheric surfaces. The image-side surface 354has an inflection point.

The infrared rays filter 370 is made of glass, and between the fifthlens 350 and the image plane 380. The infrared rays filter 370 gives nocontribution to the focal length of the system.

The parameters of the lenses of the third preferred embodiment are|f2|+|f3|+|f4|=32.4226 mm; |f1|+|f5|=8.1201 mm; and|f2|+f3|+|f4|>|f1|+|f5|, where f1 is a focal length of the first lens310; f2 is a focal length of the second lens 320; f3 is a focal lengthof the third lens 330; and f4 is a focal length of the fourth lens 340;and f5 is a focal length of the fifth lens 350.

The optical image capturing system of the third preferred embodimentfurther satisfies TP4=1.0277 mm and TP5=0.3571 mm, where TP4 is athickness of the fourth lens 340 on the optical axis, and TP5 is athickness of the fifth lens 350 on the optical axis.

In the third embodiment, the first, the third, and the fourth lenses210, 230, and 240 are positive lenses, and their focal lengths are f1,f3, and f4 respectively. ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe first lens 310 to the other positive lens to avoid the significantaberration caused by the incident rays.

In the third embodiment, the second and the fifth lenses 220 and 250 arenegative lenses, and their focal lengths are f2 and f5 respectively. ΣNPis a sum of the focal lengths of each negative lens. It is helpful toshare the negative refractive power of the fifth lens 350 to otherlenses with negative refractive power.

The parameters of the lenses of the third embodiment are listed in Table5 and Table 6.

TABLE 5 f = 3.05885 mm; f/HEP = 1.6; HAF = 50.0004 deg; tan(HAF) =1.1918 Radius of curvature Thickness Refractive Abbe Focal lengthSurface (mm) (mm) Material index number (mm) 0 Object plane infinity 1Aperture infinity −0.20702 1.565 58 6.58097 2 1st lens 2.32343 0.353041plastic 3 5.82279 0.457376 1.65 21.4 −19.4179 4 2^(nd) lens 7.94316 0.2plastic 5 4.84204 0.076567 1.565 58 11.2433 6 3^(rd) lens 15.636050.834209 plastic 7 −10.5486 0.332193 1.607 26.6 1.76135 8 4^(th) lens5.91378 1.027713 plastic 9 −1.22915 0.339447 1.65 21.4 −1.53908 105^(th) lens −2.41538 0.357068 plastic 11 1.83365 0.5 1.517 64.2 12Filter infinity 0.2 1.517 64.2 13 infinity 0.269115 14 Image planeinfinity Reference wavelength: 555 nm

TABLE 6 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k1.115215 11.130271 −4.865377 −35.432749 −50 29.732304 A4 −1.22823E−02  6.98730E−03 −8.42639E−02   8.33111E−03 −1.04830E−02 −8.34945E−02 A6  4.09036E−02 −7.23714E−02 −5.67365E−02 −1.54384E−01 −3.80907E−02−1.68832E−02 A8 −1.26323E−01   1.26898E−01 −3.15710E−02   1.88117E−01  4.40527E−02   2.41127E−02 A10   1.82929E−01 −1.41596E−01   1.04374E−01−1.44884E−01 −1.76411E−02 −1.34748E−02 A12 −1.37740E−01   6.49432E−02−1.24170E−01   6.03040E−02   3.66285E−03   2.24863E−03 A14   3.65585E−02−1.71854E−02   3.18231E−02 −1.02849E−02 −2.75988E−04   5.03578E−04Surface 8 9 10 11 k −43.181612 −4.099814 0.602956 −11.784731 A4−5.06881E−02 −3.12119E−03 7.84581E−02   7.00755E−03 A6   1.05343E−02−2.49976E−02 −5.49218E−02   −1.58596E−02 A8 −1.04770E−02   1.96079E−023.36415E−03   5.17853E−03 A10   4.88607E−03 −7.49422E−03 9.94439E−03−8.54091E−04 A12 −1.04418E−03   1.32973E−03 −3.84911E−03     7.03304E−05A14   1.11042E−04 −7.55412E−05 4.42762E−04 −2.34893E−06

An equation of the aspheric surfaces of the third embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the third embodiment (with 555 nm as the mainreference wavelength) based on Table 5 and Table 6 are listed in thefollowing table:

InRS51 InRS52 HVT51 HVT52 |ODT|% |TDT|% −1.17465 −0.45992 0.000001.74263 2.07460 1.21381 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f1/f2|0.46480 0.15753 0.27206 1.73665 1.98745 0.33891 Σ PPR/|Σ Σ PPR Σ NPRNPR| Σ PP Σ NP f1/Σ PP 2.47351 2.14498 1.15316 19.58562 −20.956980.33601 HVT52/ HVT52/ |InRS51|/ |InRS52|/ f5/Σ NP IN12/f HOI HOS TP5 TP50.07344 0.14953 0.4659 0.3523 3.2897 1.2881 InTL HOS HOS/HOI InS/HOSInTL/HOS Σ TP/InTL 4.94673 3.97761 1.32266 0.95815 0.80409 0.69691(TP1 + IN12)/ (TP5 + IN45)/ TP2 TP4 (TP2 + TP3 + TP4)/Σ TP 4.052090.67773 0.74383

The exact parameters related to inflection points of the thirdembodiment (with main reference wavelength as 555 nm) based on Table 5and Table 6 are listed in the following table:

HIF121 0.73520 HIF121/HOI 0.19658 SGI121 0.04521 |SGI121|/(|SGI121| +TP1) 0.11351 HIF211 0.32257 HIF211/HOI 0.08625 SGI211 0.00556|SGI211|/(|SGI211| + TP2) 0.02705 HIF221 0.48706 HIF221/HOI 0.13023SGI221 0.02157 |SGI221|/(|SGI221| + TP2) 0.09737 HIF311 0.46827HIF311/HOI 0.12521 SGI311 0.00612 |SGI311|/(|SGI311| + TP3) 0.00729HIF312 0.92223 HIF312/HOI 0.24659 SGI312 0.01161 |SGI312|/(|SGI312| +TP3) 0.01372 HIF321 1.33361 HIF321/HOI 0.35658 SGI321 −0.35650|SGI321|/(|SGI321| + TP3) 0.29940 HIF411 0.46150 HIF411/HOI 0.12339SGI411 0.01476 |SGI411|/(|SGI411| + TP4) 0.01416 HIF412 1.58641HIF412/HOI 0.42417 SGI412 −0.13299 |SGI412|/(|SGI412| + TP4) 0.11458HIF421 1.64121 HIF421/HOI 0.43883 SGI421 −0.72795 |SGI421|/(|SGI421| +TP4) 0.41463 HIF521 0.83907 HIF521/HOI 0.22435 SGI521 0.13595|SGI521|/(|SGI521| + TP5) 0.27575

Fourth Embodiment

As shown in FIG. 4A and FIG. 4B, an optical image capturing system ofthe fourth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 400, afirst lens 410, a second lens 420, a third lens 430, a fourth lens 440,a fifth lens 450, an infrared rays filter 470, an image plane 480, andan image sensor 490.

The first lens 410 has positive refractive power, and is made ofplastic. An object-side surface 412 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 414thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 414 has an inflection point thereon.

The second lens 420 has negative refractive power, and is made ofplastic. An object-side surface 422 thereof, which faces the objectside, is a aspheric convex surface, and an image-side surface 424thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 422 has an inflection point, and the image-sidesurface 424 has two inflection points.

The third lens 430 has positive refractive power, and is made ofplastic. An object-side surface 432, which faces the object side, is aconvex aspheric surface, and an image-side surface 434, which faces theimage side, is a convex aspheric surface. The object-side surface 432has two inflection points, and the image-side surface 434 has aninflection point.

The fourth lens 440 has positive refractive power, and is made ofplastic. An object-side surface 442, which faces the object side, is aconvex aspheric surface, and an image-side surface 444, which faces theimage side, is a convex aspheric surface. The object-side surface 442and the image-side surface 444 both have an inflection point.

The fifth lens 450 has negative refractive power, and is made ofplastic. An object-side surface 452 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 454thereof, which faces the image side, is a concave aspheric surface, andeach of them has an inflection point.

The infrared rays filter 470 is made of glass, and between the fifthlens 450 and the image plane 480. The infrared rays filter 470 gives nocontribution to the focal length of the system.

The optical image capturing system of the fourth preferred embodimenthas the following parameters, which are |f2|+|f3|+|f4|=26.7777 mm;|f1|+|f5|=7.5798 mm; and |f2|+f3|+|f4|>|f1|+|f5|, where f1 is a focallength of the first lens 410; f2 is a focal length of the second lens420; f3 is a focal length of the third lens 430; f4 is a focal length ofthe fourth lens 440; and f5 is a focal length of the fifth lens 450.

The optical image capturing system of the fourth preferred embodimentfurther satisfies TP4=0.6641 mm and TP5=0.3846 mm, where TP4 is athickness of the fourth lens on the optical axis, and TP5 is a thicknessof the fifth lens on the optical axis.

In the fourth embodiment, the first, the third, and the fourth lenses410, 430, and 440 are positive lenses, and their focal lengths are f1,f3, and f4 respectively. ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe first lens 410 to the other positive lens to avoid the significantaberration caused by the incident rays.

In the fourth embodiment, the second and the fifth lenses 420 and 450are negative lenses, and their focal lengths are f2 and f5 respectively.ΣNP is a sum of the focal lengths of each negative lens. It is helpfulto share the negative refractive power of the fifth lens 450 to othernegative lenses to avoid the significant aberration caused by theincident rays.

The parameters of the lenses of the fourth embodiment are listed inTable 7 and Table 8.

TABLE 7 f = 3.10964 mm; f/HEP = 1.8; HAF = 50.0001 deg; tan(HAF) =1.1918 Radius of curvature Thickness Refractive Abbe Focal lengthSurface (mm) (mm) Material index number (mm) 0 Object plane infinity 1Aperture infinity −0.22952 2 1^(st) lens 1.85543 0.323351 plastic 1.56558 5.76521 3 4.02259 0.451954 4 2^(nd) lens 13.22816 0.2 plastic 1.6521.4 −15.7807 5 5.76987 0.063866 6 3^(rd) lens 14.30372 0.813297 plastic1.565 58 8.81139 7 −7.51537 0.440432 8 4^(th) lens 3.9112 0.664104plastic 1.583 30.2 2.18556 9 −1.78697 0.423446 10 5^(th) lens −1.695550.384614 plastic 1.632 23.4 −1.81457 11 3.94917 0.3 12 Filter infinity0.2 1.517 64.2 13 infinity 0.329249 14 Image plane infinity Referencewavelength: 555 nm

TABLE 8 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k0.81056 6.920254 −50 22.219487 50 13.90358 A4 −8.08919E−03   1.66907E−02−9.41408E−02 −6.59309E−02 −2.45875E−02 −7.68123E−02 A6   6.16441E−02−7.37384E−02 −9.33631E−02 −1.18278E−01 −3.63650E−02 −1.25192E−02 A8−1.34347E−01   1.55040E−01   6.32463E−02   1.62882E−01   3.45634E−02  1.82598E−02 A10   1.66548E−01 −1.63622E−01   4.55174E−04 −1.23873E−01  2.49263E−03 −1.46102E−02 A12 −1.00744E−01   5.75888E−02 −9.90199E−02  5.03186E−02 −9.62709E−03   3.06895E−03 A14   2.28465E−02 −1.16382E−02  2.19684E−02 −8.64796E−03   2.47321E−03   3.15123E−04 Surface 8 9 10 11k 2.080982 −1.563385 −0.358726 −23.55212 A4 −7.53626E−02   2.96645E−02  1.23832E−02   2.55146E−03 A6   2.26118E−02 −2.49354E−02 −1.92842E−03−1.34850E−02 A8 −1.59430E−02   1.78544E−02 −1.12204E−02   4.86038E−03A10   4.95408E−03 −7.93350E−03   1.20226E−02 −8.55387E−04 A12−1.65361E−03   1.30293E−03 −3.72413E−03   7.21051E−05 A14   1.12446E−04−2.73636E−05   3.87876E−04 −2.40558E−06

An equation of the aspheric surfaces of the fourth embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the fourth embodiment (with 555 nm as the mainreference wavelength) based on Table 7 and Table 8 are listed in thefollowing table:

InRS51 InRS52 HVT51 HVT52 |ODT| |TDT| −1.15388 −0.64707 0.00000 1.523911.57549% 1.10615% |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f1/f2| 0.539380.19705 0.35291 1.42281 1.71371 0.36533 Σ PPR/|Σ Σ PPR Σ NPR NPR| Σ PP ΣNP f1/Σ PP 2.31510 1.91076 1.21161 16.76216 −17.59527 0.34394 HVT52/HVT52/ |InRS51|/ |InRS52|/ f5/Σ NP IN12/f HOI HOS TP5 TP5 0.103130.14534 0.4075 0.3317 3.0001 1.6824 InTL HOS HOS/HOI InS/HOS InTL/HOS ΣTP/InTL 4.59431 3.76506 1.22843 0.95004 0.81950 0.63355 (TP1 + IN12)/(TP5 + IN45)/ TP2 TP4 (TP2 + TP3 + TP4)/Σ TP 3.87653 1.21677 0.70320

The exact parameters related to inflection points of the fourthembodiment (with main reference wavelength as 555 nm) based on Table 7and Table 8 are listed in the following table:

HIF121 0.83523 HIF121/HOI 0.22332 SGI121 0.09421 |SGI121|/(|SGI121| +TP1) 0.22562 HIF211 0.24014 HIF211/HOI 0.06421 SGI211 0.00184|SGI211|/(|SGI211| + TP2) 0.00912 HIF221 0.42148 HIF221/HOI 0.11270SGI221 0.01330 |SGI221|/(|SGI221| + TP2) 0.06236 HIF222 1.03865HIF222/HOI 0.27771 SGI222 0.00385 |SGI222|/(|SGI222| + TP2) 0.01887HIF311 0.41856 HIF311/HOI 0.11192 SGI311 0.00527 |SGI311|/(|SGI311| +TP3) 0.00644 HIF312 0.94855 HIF312/HOI 0.25362 SGI312 0.00725|SGI312|/(|SGI312| + TP3) 0.00883 HIF322 1.41359 HIF322/HOI 0.37797SGI322 −0.50303 |SGI322|/(|SGI322| + TP3) 0.38215 HIF411 0.61785HIF411/HOI 0.16520 SGI411 0.03975 |SGI411|/(|SGI411| + TP4) 0.05647HIF421 1.66767 HIF421/HOI 0.44590 SGI421 −0.69186 |SGI421|/(|SGI421| +TP4) 0.51024 HIF511 1.81375 HIF511/HOI 0.48496 SGI511 −0.99942|SGI511|/(|SGI511| + TP5) 0.72211 HIF521 0.81503 HIF521/HOI 0.21792SGI521 0.06809 |SGI521|/(|SGI521| + TP5) 0.15042

Fifth Embodiment

As shown in FIG. 5A and FIG. 5B, an optical image capturing system ofthe fifth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 500, afirst lens 510, a second lens 520, a third lens 530, a fourth lens 540,a fifth lens 550, an infrared rays filter 570, an image plane 580, andan image sensor 590.

The first lens 510 has positive refractive power, and is made ofplastic. An object-side surface 512 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 514thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 514 has an inflection point thereon.

The second lens 520 has negative refractive power, and is made ofplastic. An object-side surface 522 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 524thereof, which faces the image side, is a convex aspheric surface.

The third lens 530 has positive refractive power, and is made ofplastic. An object-side surface 532, which faces the object side, is aconvex aspheric surface, and an image-side surface 534, which faces theimage side, is a concave aspheric surface. The object-side surface 532has an inflection point, and the image-side surface 534 has twoinflection points.

The fourth lens 540 has a positive refractive power, and is made ofplastic. An object-side surface 542, which faces the object side, is aconcave aspheric surface, and an image-side surface 544, which faces theimage side, is a convex aspheric surface. The object-side surface 542and the image-side surface 544 both have an inflection point thereon.

The fifth lens 550 has negative refractive power, and is made ofplastic. An object-side surface 552, which faces the object side, is aconvex aspheric surface, and an image-side surface 554, which faces theimage side, thereof is a concave aspheric surface. The object-sidesurface 552 and the image-side surface 554 both have an inflection pointthereon.

The infrared rays filter 570 is made of glass, and between the fifthlens 550 and the image plane 580. The infrared rays filter 570 gives nocontribution to the focal length of the system.

The parameters of the lenses of the fifth preferred embodiment are|f2|+|f3|+|f4|=112.7630 mm; |f1|+|f5|=7.5905 mm; and|f2|+|f3|+|f4|>|f1|+|f5|, where f1 is a focal length of the first lens510; f2 is a focal length of the second lens 520; f3 is a focal lengthof the third lens 530; and f4 is a focal length of the fourth lens 540;and f5 is a focal length of the fifth lens 550.

The optical image capturing system of the fifth preferred embodimentfurther satisfies TP4=1.4369 mm and TP5=0.7193 mm, where TP4 is athickness of the fourth lens 540 on the optical axis, and TP5 is athickness of the fifth lens 550 on the optical axis.

In the fifth embodiment, the first, the third, and the fourth lenses410, 430, and 440 are positive lenses, and their focal lengths are f1,f3, and f4 respectively. ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe first lens 510 to the other positive lens to avoid the significantaberration caused by the incident rays.

In the fifth embodiment, the second and the fifth lenses 420 and 45 arenegative lenses, and their focal lengths are f2 and f5 respectively. ΣNPis a sum of the focal lengths of each negative lens. It is helpful toshare the negative refractive power of the fifth lens 550 to othernegative lenses.

The parameters of the lenses of the fifth embodiment are listed in Table9 and Table 10.

TABLE 9 f = 3.07211 mm; f/HEP = 2.0; HAF = 50.0000 deg; tan(HAF) =1.1918 Radius of curvature Thickness Refractive Abbe Focal lengthSurface (mm) (mm) Material index number (mm) 0 Object plane infinity 1Aperture infinity −0.17441 2 1^(st) lens 1.877 0.291633 plastic 1.58330.2 5.66505 3 4.06658 0.316187 4 2^(nd) lens −10.1091 0.409057 plastic1.565 58 −100 5 −12.4837 0.051233 6 3^(rd) lens 5.92541 0.576756 plastic1.65 21.4 10.9473 7 32.70513 0.182028 8 4^(th) lens −2.6559 1.436919plastic 1.565 58 1.81565 9 −0.88685 0.05 10 5^(th) lens 5.3738 0.719329plastic 1.634 23.8 −1.9254 11 0.94863 0.6 12 Filter infinity 0.2 1.51764.2 13 infinity 0.362488 14 Image plane infinity Reference wavelength:555 nm

TABLE 10 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k−2.898419 2.201514 47.365798 49.999846 −50 48.577511 A4 7.57889E−02  1.96262E−02 −2.77771E−02 −3.17649E−01 −3.05247E−01 −3.11560E−02 A62.00574E−02 −5.11280E−02 −3.83429E−02   1.12207E−01   1.29093E−02−4.89053E−02 A8 −5.35177E−02     1.22456E−01   6.98240E−03   1.11784E−02  7.52215E−02   3.06016E−02 A10 1.12972E−01 −1.77441E−01 −1.07919E−02−1.04300E−01 −4.10520E−01 −1.08111E−02 A12 −1.07360E−01     6.61941E−02−9.59444E−02   1.29766E−02   4.97363E−01   4.23316E−04 A14 2.22060E−02−1.12144E−02   2.19634E−02 −1.95273E−02 −3.04967E−01   7.68035E−04Surface 8 9 10 11 k −4.171536 −2.809738 −50 −5.295357 A4 −1.71318E−02−5.28008E−02 −1.77724E−02 −1.06711E−02 A6   2.16362E−02 −2.52606E−02−2.36540E−02 −1.22919E−02 A8 −1.23317E−02   2.08644E−02 −7.86477E−03  5.10738E−03 A10   4.09103E−03 −6.71711E−03   1.16802E−02 −9.07942E−04A12   8.35031E−04   9.11449E−04 −3.81466E−03   7.46277E−05 A14−3.92410E−04   3.81218E−05   3.89495E−04 −2.32533E−06

An equation of the aspheric surfaces of the fifth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the fifth embodiment (with 555 nm as the mainreference wavelength) based on Table 9 and Table 10 are listed in thefollowing table:

InRS51 InRS52 HVT51 HVT52 |ODT| |TDT| −0.70347 −0.12434 0.84832 1.862492.09505% 0.81365% |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f1/f2| 0.542290.03072 0.28063 1.69202 1.59557 0.05665 Σ PPR/|Σ Σ PPR Σ NPR NPR| Σ PP ΣNP f1/Σ PP 2.51494 1.62629 1.54642 18.42800 −101.92540 0.30742 HVT52/HVT52/ f5/Σ NP IN12/f HOI HOS |InRS51|/TP5 |InRS52|/TP5 0.01889 0.102920.4980 0.3585 0.9780 0.1729 InTL HOS HOS/HOI InS/HOS InTL/HOS Σ TP/InTL5.19563 4.03314 1.38921 0.96643 0.77626 0.85137 (TP1 + IN12)/ (TP5 +IN45)/ TP2 TP4 (TP2 + TP3 + TP4)/Σ TP 1.48591 0.53540 0.70558

The exact parameters related to inflection points of the fifthembodiment (with main reference wavelength as 555 nm) based on Table 9and Table 10 are listed in the following table:

HIF121 0.74702 HIF121/HOI 0.19974 SGI121 0.07188 |SGI121|/(|SGI121| +TP1) 0.19775 HIF311 0.20619 HIF311/HOI 0.05513 SGI311 0.00299|SGI311|/(|SGI311| + TP3) 0.00515 HIF321 0.25733 HIF321/HOI 0.06880SGI321 0.00086 |SGI321|/(|SGI321| + TP3) 0.00149 HIF322 1.33054HIF322/HOI 0.35576 SGI322 −0.17387 |SGI322|/(|SGI322| + TP3) 0.23163HIF411 1.03535 HIF411/HOI 0.27683 SGI411 −0.18492 |SGI411|/(|SGI411| +TP4) 0.11402 HIF421 1.47016 HIF421/HOI 0.39309 SGI421 −0.96954|SGI421|/(|SGI421| + TP4) 0.40289 HIF511 0.51071 HIF511/HOI 0.13655SGI511 0.02040 |SGI511|/(|SGI511| + TP5) 0.02758 HIF521 0.75392HIF521/HOI 0.20158 SGI521 0.19949 |SGI521|/(|SGI521| + TP5) 0.21711

Sixth Embodiment

As shown in FIG. 6A and FIG. 6B, an optical image capturing system ofthe sixth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, a first lens 610,an aperture 600, a second lens 620, a third lens 630, a fourth lens 640,a fifth lens 650, an infrared rays filter 670, an image plane 680, andan image sensor 690.

The first lens 610 has negative refractive power, and is made ofplastic. An object-side surface 612 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 614thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 612 has an inflection point.

The second lens 620 has positive refractive power, and is made ofplastic. An object-side surface 622 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 624thereof, which faces the image side, is a convex aspheric surface.

The third lens 630 has positive refractive power, and is made ofplastic. An object-side surface 632 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 634thereof, which faces the image side, is a convex aspheric surface. Theimage-side surface 634 has an inflection point.

The fourth lens 640 has a positive refractive power, and is made ofplastic. An object-side surface 642, which faces the object side, is aconcave aspheric surface, and an image-side surface 644, which faces theimage side, is a convex aspheric surface.

The fifth lens 650 has negative refractive power, and is made ofplastic. An object-side surface 652 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 654thereof, which faces the image side, is a convex aspheric surface. Theimage-side surface 654 has an inflection point.

The infrared rays filter 670 is made of glass, and between the fifthlens 650 and the image plane 680. The infrared rays filter 670 gives nocontribution to the focal length of the system.

The parameters of the lenses of the sixth preferred embodiment are|f2|+|f3|+|f4|=33.5491 mm; |f1|+|f5|=10.9113 mm; and|f2|+|f3|+|f4|>|f1|+|f5|, where f1 is a focal length of the first lens610; f2 is a focal length of the second lens 620; f3 is a focal lengthof the third lens 630; and f4 is a focal length of the fourth lens 640;and f5 is a focal length of the fifth lens 650.

The optical image capturing system of the sixth preferred embodimentfurther satisfies TP4=1.1936 mm and TP5=0.4938 mm, where TP4 is athickness of the fourth lens 640 on the optical axis, and TP5 is athickness of the fifth lens 650 on the optical axis.

In the sixth preferred embodiment, the second, the third, and the fourthlenses 620, 630, and 640 are positive lenses, and their focal lengthsare f2, f3, and f4. The optical image capturing system of the sixthpreferred embodiment further satisfies ΣPP=f2+f3+f4=33.5491 mm andf2/(f2+f3+f4)=0.1012, where ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe second lens 620 to the other positive lenses to avoid thesignificant aberration caused by the incident rays.

In the sixth preferred embodiment, the first and the fifth lenses 610and 650 are negative lenses, and their focal lengths are f2 and f4. Theoptical image capturing system of the sixth preferred embodiment furthersatisfies ΣNP=f1+f5=−10.9113 mm; and f5/(f1+f5)=0.3956, where ΣNP is asum of the focal lengths of each negative lens. It is helpful to sharethe negative refractive power of the fifth lens 650 to the othernegative lenses to avoid the significant aberration caused by theincident rays.

The parameters of the lenses of the sixth embodiment are listed in Table11 and Table 12.

TABLE 11 f = 3.06009 mm; f/HEP = 2.0; HAF = 50.0007 deg; tan(HAF) =1.1918 Radius of curvature Thickness Refractive Abbe Focal lengthSurface (mm) (mm) Material index number (mm) 0 Object plane infinity 11^(st) lens 3.50904 0.796742 plastic 1.514 56.8 −6.5946 2 1.593564.172675 3 Aperture infinity −0.36597 4 2^(nd) lens 2.36495 0.703695plastic 1.565 58 3.39442 5 −9.20538 0.766828 6 3^(rd) lens −3.966650.773956 plastic 1.565 58 26.056 7 −3.3475 0.128823 8 4^(th) lens−19.1128 1.193613 plastic 1.565 58 4.09863 9 −2.11807 0.384924 10 5^(th)lens −1.36773 0.49381 plastic 1.65 21.4 −4.31667 11 −3.02608 0.1 12Filter infinity 0.2 1.517 64.2 13 infinity 1.623541 14 Image planeinfinity 0.027363 Reference wavelength: 555 nm

TABLE 12 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 k−0.364446 −0.797073 −0.976489 45.184506 −4.955335 −4.26661 A43.03151E−03 2.47474E−02 1.19749E−02 1.53107E−02 −3.15766E−02−2.02516E−02 A6 3.11535E−04 1.09227E−03 3.29173E−03 −8.86750E−03  −7.36452E−03 −1.45844E−02 A8 6.03641E−06 2.11777E−03 −1.41246E−03  1.63700E−02   9.93051E−03   1.47638E−02 A10 −1.90703E−05  −1.38673E−04   2.09487E−03 −9.72154E−03   −1.85429E−02 −8.52821E−03 A121.68207E−06 −2.43097E−05   −1.07114E−03   1.55553E−03   8.34169E−03−3.64995E−05 A14 −4.42840E−08   5.42793E−07 4.80842E−05 4.47459E−04−9.07537E−04   8.24445E−04 Surface 8 9 10 11 k −17.215386 0.01572−0.56999 −1.957095 A4 −2.81080E−02   1.04073E−02   2.87988E−02  4.78950E−03 A6   1.26828E−02   4.37395E−04 −1.68233E−04 −4.65598E−04A8 −2.57367E−02 −8.83115E−04 −1.52077E−04   1.47492E−04 A10  1.81999E−02 −2.21655E−04   2.58158E−05 −1.37919E−05 A12 −8.19803E−03−4.19162E−05 −6.96422E−06   1.27305E−06 A14   1.22153E−03   5.89942E−06  1.05801E−05 −1.66946E−07

An equation of the aspheric surfaces of the sixth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters related to inflection points of the sixthembodiment (with main reference wavelength as 555 nm) based on Table 11and Table 12 are listed in the following table:

InRS51 InRS52 HVT51 HVT52 |ODT|% |TDT|% −1.19340 −0.63635 0.000000.00000 1.99808 0.23490 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f1/f2|0.46403 0.90151 0.11744 0.74661 0.70890 1.94278 ΣPPR/ ΣPPR ΣNPR |ΣNPR|ΣPP ΣNP f2/ΣPP 1.76556 1.17293 1.50526 33.54905 −10.91127 0.10118|InRS51|/ |InRS52|/ HVT52/ HVT52/ f5/ΣNP IN12/f TP5 TP5 HOI HOS 0.395621.24399 0.99982 0.53313 0.00000 0.00000 InTL HOS HOS/HOI InS/HOSInTL/HOS ΣTP/InTL 11.00000 9.04910 2.94118 0.54823 0.82265 0.43781(TP1 + IN12)/ (TP5 + IN45)/ TP2 TP4 (TP2 + TP3 + TP4)/ΣTP 6.541830.73620 0.67425

The exact parameters of the inflection points of the sixth embodiment(with main reference wavelength as 555 nm) based on Table 11 and Table12 are listed in the following table:

HIF111 2.68797 HIF111/HOI 0.718709 SGI111 1.25958 |SGI111|/(|SGI111| +TP1) 0.61254 HIF321 1.35714 HIF321/HOI 0.362872 SGI321 −0.35849|SGI321|/(|SGI321| + TP3) 0.316563 HIF521 1.81195 HIF521/HOI 0.484479SGI521 −0.454608 |SGI521|/(|SGI521| + TP5) 0.479333

It must be pointed out that the embodiments described above are onlysome preferred embodiments of the present invention. All equivalentstructures which employ the concepts disclosed in this specification andthe appended claims should fall within the scope of the presentinvention.

What is claimed is:
 1. An optical image capturing system, in order alongan optical axis from an object side to an image side, comprising: afirst lens having positive refractive power; a second lens havingnegative refractive power; a third lens having positive refractivepower; a fourth lens having positive refractive power; a fifth lenshaving negative refractive power; and an image plane; wherein theoptical image capturing system consists of the five lenses withrefractive power; at least two of the five lenses each has at least aninflection point on at least a surface thereof; the fifth lens has anobject-side surface, which faces the object side, and an image-sidesurface, which faces the image side, and both the object-side surfaceand the image-side surface of the fifth lens are aspheric surfaces;wherein the optical image capturing system satisfies:1.2≤f/HEP≤2.2;and0.5≤HOS/f≤5.0; where f is a focal length of the optical image capturingsystem; HEP is an entrance pupil diameter of the optical image capturingsystem; and HOS is a distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane; wherein theoptical image capturing system further satisfies:0 mm<HIF≤5 mm; where HIF is a distance perpendicular to the optical axisbetween any inflection point and the optical axis.
 2. The optical imagecapturing system of claim 1, wherein the optical image capturing systemfurther satisfies:0 deg<HAF≤70 deg;|TDT|<60%; and|ODT|<50%; where HAF is a half of a view angle of the optical imagecapturing system; TDT is a TV distortion; and ODT is an opticaldistortion.
 3. The optical image capturing system of claim 1, whereinthe fourth lens has at least an inflection point on at least onesurfaces thereof, and the fifth lens has at least an inflection point onat least one of the surfaces thereof.
 4. The optical image capturingsystem of claim 1, wherein the optical image capturing system furthersatisfies:0<HIF/InTL≤5; where InTL is a distance in parallel with the optical axisbetween the object-side surface of the first lens and the image-sidesurface of the fifth lens.
 5. The optical image capturing system ofclaim 4, further comprising an aperture and an image sensor on the imageplane, wherein the optical image capturing system further satisfies:0.5≤InS/HOS≤1.1; and0<HIF/HOI≤0.9; where InS is a distance in parallel with the optical axisbetween the aperture and the image plane; and HOI is a height for animage formation of the optical image capturing system.
 6. The opticalimage capturing system of claim 1, wherein the optical image capturingsystem further satisfies:−1 mm<SGI≤1 mm; where SGI is a displacement in parallel with the opticalaxis from a point on a surface of the lens, through which the opticalaxis passes, to the inflection point on the surface.
 7. The opticalimage capturing system of claim 1, wherein the optical image capturingsystem further satisfies:0.6≤InTL/HOS≤0.9; where InTL is a distance in parallel with the opticalaxis between the object-side surface of the first lens and theimage-side surface of the fifth lens.
 8. An optical image capturingsystem, in order along an optical axis from an object side to an imageside, comprising: a first lens having positive refractive power; asecond lens having negative refractive power; a third lens havingpositive refractive power; a fourth lens having positive refractivepower; a fifth lens having negative refractive power; and an imageplane; wherein the optical image capturing system consists of the fivelenses with refractive power; at least two of the five lenses each hasat least an inflection point on at least a surface thereof; the fifthlens has an object-side surface, which faces the object side, and animage-side surface, which faces the image side, and both the object-sidesurface and the image-side surface of the fifth lens are asphericsurfaces; wherein the optical image capturing system satisfies:1.2≤f/HEP≤2.2;0.5≤HOS/f≤5.0;0.4≤|tan(HAF)|≤3.0;|TDT|<60%; and|ODT|≤50%; where f is a focal length of the optical image capturingsystem; HEP is an entrance pupil diameter of the optical image capturingsystem; HOS is a distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane; HAF is a halfof a view angle of the optical image capturing system; TDT is a TVdistortion; and ODT is an optical distortion; wherein the optical imagecapturing system further satisfies:0<SGI521/(TP5+SGI521)≤0.8; where SGI521 is a displacement in parallelwith the optical axis from a point on the image-side surface of thefifth lens, through which the optical axis passes, to the inflectionpoint, which is the closest to the optical axis, on the image-sidesurface of the fifth lens; and TP5 is a thickness of the fifth lens onthe optical axis.
 9. The optical image capturing system of claim 8,wherein at least one of the surfaces of the fourth lens has at least aninflection point thereon, and at least one of the surfaces of the thirdlens has at least an inflection point thereon.
 10. The optical imagecapturing system of claim 8, wherein the first lens has at least aninflection point on at least one of the surfaces thereof.
 11. Theoptical image capturing system of claim 8, wherein the first lens has atleast an inflection point on an image-side surface, which faces theimage side.
 12. The optical image capturing system of claim 8, whereinthe optical image capturing system further satisfies:0<|f/f1|≤2;0<|f/f2|≤2;0<|f/f3|≤3;0<|f/f4|≤3; and0<|f/f5|≤3; where f1, f2, f3, f4, and f5 are focal lengths of the firstlens to the fifth lens, respectively.
 13. The optical image capturingsystem of claim 8, wherein the optical image capturing system furthersatisfies:0<IN12/f≤2.0; where IN12 is a distance on the optical axis between thefirst lens and the second lens.
 14. The optical image capturing systemof claim 8, wherein the optical image capturing system furthersatisfies:0<(TP1+IN12)/TP2≤10; where TP1 is a central thickness of the first lenson the optical axis; TP2 is a central thickness of the second lens onthe optical axis; and IN12 is a distance on the optical axis between thefirst lens and the second lens.
 15. The optical image capturing systemof claim 8, wherein the optical image capturing system furthersatisfies:0<(TP5+IN45)/TP4≤10; TP4 is a central thickness of the fourth lens onthe optical axis; TP5 is a central thickness of the fifth lens on theoptical axis; and IN45 is a distance on the optical axis between thefourth lens and the fifth lens.
 16. An optical image capturing system,in order along an optical axis from an object side to an image side,comprising: a first lens having positive refractive power; a second lenshaving negative refractive power; a third lens having positiverefractive power, wherein the third lens has an object-side surface,which faces the object side, and an image-side surface, which faces theimage side; at least one surface between the object-side surface and theimage-side surface of the third lens has at least an inflection point; afourth lens having positive refractive power, wherein the fourth lenshas an object-side surface, which faces the object side, and animage-side surface, which faces the image side; at least one of theobject-side surface and the image-side surface of the fourth lens has atleast an inflection point; a fifth lens having negative refractivepower, and having at least an inflection point on an object-sidesurface, which faces the object side, and an image-side surface, whichfaces the image side, respectively, wherein at least one of theimage-side surface and the object-side surface thereof has at least aninflection point; and an image plane; wherein the optical imagecapturing system consists of the five lenses having refractive power;the object-side surface and the image-side surface of the fifth lens areaspheric surfaces; wherein the optical image capturing system satisfies:1.2≤f/HEP≤2.2;0.4≤|tan(HAF)|≤3.0;0.5≤HOS/f≤3.0;|TDT|<60%; and|ODT|≤50%; where f is a focal length of the optical image capturingsystem; HEP is an entrance pupil diameter of the optical image capturingsystem; HAF is a half of a view angle of the optical image capturingsystem; HOS is a distance in parallel with the optical axis from anobject-side surface of the first lens to the image plane; TDT is a TVdistortion; and ODT is an optical distortion.
 17. The optical imagecapturing system of claim 16, wherein the optical image capturing systemfurther satisfies:0 mm<HIF≤5 mm; where HIF is a distance perpendicular to the optical axisbetween the optical axis and the inflection points of optical surfacesof one of the third lens, the fourth lens, and the fifth lens.
 18. Theoptical image capturing system of claim 16, wherein the optical imagecapturing system further satisfies:0.6≤InTL/HOS≤0.9; where InTL is a distance in parallel with the opticalaxis between the object-side surface of the first lens and theimage-side surface of the fifth lens.
 19. The optical image capturingsystem of claim 16, wherein the third lens has at least an inflectionpoint on each surface thereof; and the optical image capturing systemfurther satisfies:0<(TP1+IN12)/TP2≤10; where TP1 is a central thickness of the first lenson the optical axis; TP2 is a central thickness of the second lens onthe optical axis; and IN12 is a distance on the optical axis between thefirst lens and the second lens.
 20. The optical image capturing systemof claim 19, wherein the optical image capturing system furthersatisfies:0.45<ΣTP/InTL≤0.95; where ΣTP is a sum of central thicknesses of thelenses, which have refractive power, on the optical axis; and InTL is adistance between the object-side surface of the first lens and theimage-side surface of the fifth lens.
 21. The optical image capturingsystem of claim 19, further comprising an aperture and an image sensoron the image plane, wherein the optical image capturing system furthersatisfies:0.5≤InS/HOS≤1.1; where InS is a distance in parallel with the opticalaxis between the aperture and the image plane.